"For some frequent operations, e.g. networking, the overhead of context-switching was too great for an out-of-kernel implementation. Thus the microkernels were not as efficient as originally thought."
I can't understand why for some frequent operations microkernels are not efficient as originally thought. I thinking is why IPC cost on Mach is very high. Its that true? Can anyone explain why that overhead happen in Mach?
Thanks
Matheus Morais
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